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https://issues.apache.org/jira/browse/HBASE-13351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14484584#comment-14484584
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Mikhail Antonov commented on HBASE-13351:
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(on the other hand, out of curiosity, if I live metahandler count as 2 in the
configuration, but change the QoS for these 5 methods in MasterRpcServices from
admin to replication, everything works.. So..I don't think that's very
realistic production usecase, but sometimes in corner case this contention may
happen)
> Annotate internal MasterRpcServices methods with admin priority
> ---------------------------------------------------------------
>
> Key: HBASE-13351
> URL: https://issues.apache.org/jira/browse/HBASE-13351
> Project: HBase
> Issue Type: Improvement
> Components: master
> Reporter: Josh Elser
> Assignee: Josh Elser
> Fix For: 2.0.0, 1.1.0
>
> Attachments: HBASE-13351-v1.patch, HBASE-13351.patch
>
>
> HBASE-12071, among other things, introduced annotating RPC methods to give
> certain methods priority over others. Namely, this helps ensure that client
> requests cannot starve out internal RPC between master and regionserver.
> Similarly, we can do the same thing for Master RPC methods that are invoked
> by RS's.
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